diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6389653b262..f87cdf504a8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ env:
   QW_TEST_DATABASE_URL: postgres://quickwit-dev:quickwit-dev@localhost:5432/quickwit-metastore-dev
   RUST_BACKTRACE: 1
   RUSTDOCFLAGS: -Dwarnings -Arustdoc::private_intra_doc_links
-  RUSTFLAGS: -Dwarnings
+  RUSTFLAGS: "--cfg tokio_unstable -Dwarnings"
 
 # Ensures that we cancel running jobs for the same PR / same workflow.
 concurrency:
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index ef9422951ad..38b1fa39f7d 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -21,6 +21,7 @@ env:
   QW_S3_ENDPOINT: "http://localhost:4566" # Services are exposed as localhost because we are not running coverage in a container.
   QW_S3_FORCE_PATH_STYLE_ACCESS: 1
   QW_TEST_DATABASE_URL: postgres://quickwit-dev:quickwit-dev@localhost:5432/quickwit-metastore-dev
+  RUSTFLAGS: "--cfg tokio_unstable"
 
 jobs:
   test:
diff --git a/Dockerfile b/Dockerfile
index 796c6a421a1..7fab6042abd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -38,6 +38,7 @@ COPY --from=ui-builder /quickwit/quickwit-ui/build /quickwit/quickwit-ui/build
 
 WORKDIR /quickwit
 
+ENV RUSTFLAGS="--cfg tokio_unstable"
 RUN echo "Building workspace with feature(s) '$CARGO_FEATURES' and profile '$CARGO_PROFILE'" \
     && cargo build \
         -p quickwit-cli \
diff --git a/quickwit/.cargo/config.toml b/quickwit/.cargo/config.toml
new file mode 100644
index 00000000000..bff29e6e175
--- /dev/null
+++ b/quickwit/.cargo/config.toml
@@ -0,0 +1,2 @@
+[build]
+rustflags = ["--cfg", "tokio_unstable"]
diff --git a/quickwit/quickwit-common/src/runtimes.rs b/quickwit/quickwit-common/src/runtimes.rs
index be1e8ce16d0..06011955fd5 100644
--- a/quickwit/quickwit-common/src/runtimes.rs
+++ b/quickwit/quickwit-common/src/runtimes.rs
@@ -92,6 +92,7 @@ fn start_runtimes(config: RuntimesConfig) -> HashMap<RuntimeType, Runtime> {
             format!("blocking-{id}")
         })
         .enable_all()
+        .disable_lifo_slot()
         .build()
         .unwrap();
     runtimes.insert(RuntimeType::Blocking, blocking_runtime);
@@ -103,6 +104,7 @@ fn start_runtimes(config: RuntimesConfig) -> HashMap<RuntimeType, Runtime> {
             format!("non-blocking-{id}")
         })
         .enable_all()
+        .disable_lifo_slot()
         .build()
         .unwrap();
     runtimes.insert(RuntimeType::NonBlocking, non_blocking_runtime);